/* 全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Dark theme colors - softer version */
  --background-primary: #1a1a1a;
  --background-secondary: #242424;
  --background-tertiary: #2a2a2a;
  --background-light: #333333;
  
  /* Text colors */
  --text-primary: #ffffff;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  
  /* Brand colors - keeping Xiaohongshu red */
  --primary-color: #ff2442;
  --primary-light: #ff4d6a;
  --primary-dark: #cc1a35;
  
  /* Accent colors */
  --accent-color: #2a2a2a;
  --accent-light: #3a3a3a;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #ff2442, #ff4d6a);
  --gradient-secondary: linear-gradient(135deg, #2a2a2a, #3a3a3a);
  
  /* Shadows */
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-heavy: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(255, 36, 66, 0.3);
  
  /* Borders */
  --border-light: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.15);
  
  /* Spacing */
  --section-padding: 80px 0;
  --container-padding: 0 20px;
  
  /* Typography */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--background-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

html {
  scroll-behavior: smooth;
}

/* 为 main 元素添加通用上边距，防止被固定导航栏遮挡 */
.App main {
  padding-top: 80px; /* 根据导航栏高度调整 */
}

/* Global container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--container-padding);
}

/* Global section styling */
section {
  padding: var(--section-padding);
  position: relative;
}

/* Global heading styles */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.2;
}

/* Global paragraph styles */
p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

/* Global button base styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255, 36, 66, 0.2);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
  background: var(--accent-color);
  border-color: var(--primary-color);
}

/* Global card styles */
.card {
  background: var(--background-secondary);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  border-color: var(--border-medium);
}

/* Gradient text utility */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Glass morphism effect */
.glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
}

/* Responsive utilities */
@media (max-width: 768px) {
  :root {
    --section-padding: 60px 0;
    --container-padding: 0 16px;
  }
  
  .container {
    padding: var(--container-padding);
  }
}

/* 按钮样式 */
.btn-primary {
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: 12px 30px;
  border-radius: 25px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255, 36, 66, 0.2);
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  padding: 10px 28px;
  border-radius: 25px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.btn-chrome {
  background: white;
  color: #4285F4;
  border: 2px solid #E0E0E0;
  padding: 10px 28px;
  border-radius: 25px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.btn-chrome:hover {
  transform: translateY(-2px);
  border-color: #4285F4;
  box-shadow: 0 0 15px 2px rgba(66, 133, 244, 0.3), 0 4px 8px rgba(66, 133, 244, 0.2);
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 26, 26, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(26, 26, 26, 0.95);
  box-shadow: var(--shadow-medium);
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.navbar-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-logo:hover {
  color: var(--primary-color);
}

.logo-icon {
  font-size: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 12px;
  color: white;
  font-weight: bold;
  transition: all 0.3s ease;
}

.navbar-logo:hover .logo-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 0 16px rgba(255, 36, 66, 0.3);
}

.navbar-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.navbar-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

.navbar-menu a:hover {
  color: var(--text-primary);
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
}

.navbar-menu a:hover::after {
  width: 100%;
}

.navbar-menu a.active {
  color: var(--primary-color);
}

.navbar-menu a.active::after {
  width: 100%;
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  .navbar-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--background-secondary);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-100%);
    opacity: 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--border-light);
  }

  .navbar-menu.active {
    transform: translateY(0);
    opacity: 1;
  }

  .navbar-toggle {
    display: block;
  }
}

.heart-icon {
  color: var(--primary-color);
}

.nav-buttons {
  display: flex;
  gap: 1rem;
}

.btn-login, .btn-register {
  background: transparent;
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-login:hover {
  background: var(--accent-light);
  border-color: var(--primary-light);
}

.btn-register {
  background: var(--gradient-primary);
  border-color: transparent;
}

.btn-register:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255, 36, 66, 0.2);
}

/* 主页横幅 */
.hero, .hero-content, .hero-background-shapes, .shape, .hero-buttons, .btn-chrome, .btn-secondary {
  /* This is a comment to ensure the block is not empty and to indicate removal */
}

/* New, Advanced Hero Section (V2) */
.hero-v2 {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: 100px 0;
  overflow: hidden;
  perspective: 1000px;
}

.hero-v2-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    /* 主背景 - 深空渐变 */
    linear-gradient(135deg, #0a0a0a 0%, #0f0f0f 15%, #1a1a1a 30%, #242424 50%, #1a1a1a 70%, #0f0f0f 85%, #0a0a0a 100%),
    /* 高级光效层 */
    radial-gradient(ellipse 100% 60% at 50% 0%, rgba(255, 36, 66, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 80% 40% at 20% 100%, rgba(255, 36, 66, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 60% 80% at 80% 20%, rgba(255, 36, 66, 0.06) 0%, transparent 40%),
    /* 3D网格纹理 */
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 
    100% 100%,
    200% 200%,
    300% 300%,
    400% 400%,
    60px 60px,
    60px 60px;
  animation: 
    advanced-glow 25s ease-in-out infinite,
    grid-3d-move 40s linear infinite;
  z-index: 0;
  overflow: hidden;
}

.hero-v2-background::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    /* 动态光晕矩阵 */
    radial-gradient(circle at 25% 25%, rgba(255, 36, 66, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 75% 75%, rgba(255, 36, 66, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(255, 36, 66, 0.08) 0%, transparent 60%),
    /* 高级光效 */
    radial-gradient(ellipse 120% 80% at 50% 50%, rgba(255, 36, 66, 0.05) 0%, transparent 70%);
  animation: 
    floating-aurora 20s ease-in-out infinite,
    pulse-glow 15s ease-in-out infinite;
  z-index: 1;
}

.hero-v2-background::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    /* 高级粒子系统 */
    radial-gradient(3px 3px at 50px 50px, rgba(255, 36, 66, 0.4), transparent),
    radial-gradient(2px 2px at 150px 100px, rgba(255, 36, 66, 0.3), transparent),
    radial-gradient(1px 1px at 250px 150px, rgba(255, 36, 66, 0.5), transparent),
    radial-gradient(2px 2px at 350px 200px, rgba(255, 36, 66, 0.3), transparent),
    radial-gradient(1px 1px at 450px 250px, rgba(255, 36, 66, 0.4), transparent),
    radial-gradient(3px 3px at 550px 300px, rgba(255, 36, 66, 0.3), transparent),
    radial-gradient(2px 2px at 650px 350px, rgba(255, 36, 66, 0.4), transparent),
    radial-gradient(1px 1px at 750px 400px, rgba(255, 36, 66, 0.3), transparent);
  background-repeat: repeat;
  background-size: 800px 400px;
  animation: 
    particle-3d-float 30s linear infinite,
    particle-twinkle 8s ease-in-out infinite;
  z-index: 2;
}

/* 添加额外的装饰元素 */
.hero-v2-background .bg-decoration {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    /* 几何装饰 */
    linear-gradient(45deg, transparent 40%, rgba(255, 36, 66, 0.02) 50%, transparent 60%),
    linear-gradient(-45deg, transparent 40%, rgba(255, 36, 66, 0.02) 50%, transparent 60%);
  background-size: 200px 200px;
  animation: geometric-shift 35s linear infinite;
  z-index: 3;
}

@keyframes advanced-glow {
  0%, 100% { 
    background-position: 
      0% 0%,
      0% 0%,
      0% 0%,
      0% 0%,
      0px 0px,
      0px 0px;
    filter: brightness(1) contrast(1);
  }
  25% { 
    background-position: 
      25% 25%,
      50% 50%,
      75% 75%,
      100% 100%,
      15px 15px,
      15px 15px;
    filter: brightness(1.1) contrast(1.05);
  }
  50% { 
    background-position: 
      50% 50%,
      100% 100%,
      25% 25%,
      75% 75%,
      30px 30px,
      30px 30px;
    filter: brightness(1.05) contrast(1.1);
  }
  75% { 
    background-position: 
      75% 75%,
      25% 25%,
      50% 50%,
      0% 0%,
      45px 45px,
      45px 45px;
    filter: brightness(1.1) contrast(1.05);
  }
}

@keyframes grid-3d-move {
  0% { 
    transform: translate(0, 0) rotateX(0deg);
  }
  100% { 
    transform: translate(60px, 60px) rotateX(5deg);
  }
}

@keyframes floating-aurora {
  0%, 100% { 
    opacity: 0.4;
    transform: translateY(0px) scale(1) rotate(0deg);
  }
  33% { 
    opacity: 0.7;
    transform: translateY(-15px) scale(1.05) rotate(1deg);
  }
  66% { 
    opacity: 0.5;
    transform: translateY(-30px) scale(1.1) rotate(-1deg);
  }
}

@keyframes pulse-glow {
  0%, 100% { 
    opacity: 0.3;
    filter: blur(0px);
  }
  50% { 
    opacity: 0.6;
    filter: blur(1px);
  }
}

@keyframes particle-3d-float {
  0% { 
    transform: translateY(0px) translateZ(0px);
  }
  100% { 
    transform: translateY(-400px) translateZ(100px);
  }
}

@keyframes particle-twinkle {
  0%, 100% { 
    opacity: 0.3;
  }
  50% { 
    opacity: 0.8;
  }
}

@keyframes geometric-shift {
  0% { 
    transform: translateX(0px) translateY(0px) rotate(0deg);
  }
  100% { 
    transform: translateX(200px) translateY(200px) rotate(360deg);
  }
}

.hero-container {
  position: relative;
  z-index: 1;
  padding: 0 1rem;
}

.hero-content-v2 {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  max-width: 800px;
}

.hero-v2-title {
  font-size: clamp(3.5rem, 7vw, 6.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #ffffff;
  text-align: center;
}

.hero-v2-subtitle {
  font-size: clamp(1.8rem, 3.5vw, 2.3rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: #c0c0c0;
  text-align: center;
  margin-top: 1.5rem;
  opacity: 0.95;
}

.gradient-text {
  background: linear-gradient(135deg, #FF416C, #FF4B2B);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  padding: 0 5px;
}

.hero-v2-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: #a0a0a0;
  max-width: 600px;
  line-height: 1.6;
}

/* Aurora Button */
.btn-aurora {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.8rem;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.4s ease;
  z-index: 1;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-aurora::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 0%;
  padding-bottom: 0%;
  background: radial-gradient(circle, rgba(255, 36, 66, 0.3) 0%, rgba(255, 36, 66, 0.1) 50%, rgba(255, 36, 66, 0) 70%);
  border-radius: 50%;
  transition: width 0.6s ease-in-out, padding-bottom 0.6s ease-in-out;
  z-index: -1;
}

.btn-aurora::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 36, 66, 0.1), rgba(255, 36, 66, 0.05));
  border-radius: 999px;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.btn-aurora:hover::before {
  width: 300%;
  padding-bottom: 300%;
}

.btn-aurora:hover::after {
  opacity: 1;
}

.btn-aurora:hover {
  border-color: rgba(255, 36, 66, 0.3);
  transform: translateY(-3px);
  box-shadow: 
    0 8px 25px rgba(255, 36, 66, 0.2),
    0 0 20px rgba(255, 36, 66, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.08);
}

/* Features Section */
.features {
  background: var(--background-secondary);
  position: relative;
  overflow: hidden;
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(255, 36, 66, 0.06), transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(255, 36, 66, 0.06), transparent 50%);
  pointer-events: none;
}

.features-container {
  position: relative;
  z-index: 1;
}

.features-header {
  text-align: center;
  margin-bottom: 4rem;
}

.features-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.features-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--background-tertiary);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 2.5rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  border-color: var(--border-medium);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 2rem;
  color: white;
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 0 16px rgba(255, 36, 66, 0.2);
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.feature-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.feature-list {
  list-style: none;
  text-align: left;
}

.feature-list li {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.feature-list li::before {
  content: '✓';
  color: var(--primary-color);
  font-weight: bold;
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .feature-card {
    padding: 2rem;
  }
  
  .features-title {
    font-size: var(--font-size-3xl);
  }
}

/* Advantages Section */
.advantages {
  background: var(--background-secondary);
  position: relative;
  overflow: hidden;
}

.advantages::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 20%, rgba(255, 36, 66, 0.06), transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(255, 36, 66, 0.06), transparent 50%);
  pointer-events: none;
}

.advantages-container {
  position: relative;
  z-index: 1;
}

.advantages-header {
  text-align: center;
  margin-bottom: 4rem;
}

.advantages-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.advantages-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.advantage-card {
  background: var(--background-tertiary);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.advantage-card:hover::before {
  transform: scaleX(1);
}

.advantage-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  border-color: var(--border-medium);
}

.advantage-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 2rem;
  color: white;
  transition: all 0.3s ease;
}

.advantage-card:hover .advantage-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 0 16px rgba(255, 36, 66, 0.2);
}

.advantage-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.advantage-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .advantages-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .advantages-title {
    font-size: var(--font-size-3xl);
  }
}

/* 价格方案 */
.pricing {
  background: var(--background-primary);
  position: relative;
}

.pricing::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255, 36, 66, 0.03), transparent 70%);
  pointer-events: none;
}

.pricing-container {
  position: relative;
  z-index: 1;
}

.pricing-header {
  text-align: center;
  margin-bottom: 4rem;
}

.pricing-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.pricing-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.pricing-card {
  background: var(--background-secondary);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 2.5rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.pricing-card.featured {
  background: var(--background-tertiary);
  border: 2px solid var(--primary-color);
  transform: scale(1.05);
  box-shadow: var(--shadow-glow);
}

.pricing-card.featured::before {
  content: '推荐';
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--gradient-primary);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  border-color: var(--border-medium);
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-8px);
}

.pricing-name {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.pricing-price {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.pricing-period {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: 2rem;
}

.pricing-features {
  list-style: none;
  margin-bottom: 2rem;
  text-align: left;
}

.pricing-features li {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pricing-features li::before {
  content: '✓';
  color: var(--primary-color);
  font-weight: bold;
  font-size: 0.9rem;
}

.pricing-button {
  width: 100%;
  padding: 1rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.pricing-card.featured .pricing-button {
  background: var(--gradient-primary);
  color: white;
}

.pricing-card:not(.featured) .pricing-button {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.pricing-card.featured .pricing-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255, 36, 66, 0.2);
}

.pricing-card:not(.featured) .pricing-button:hover {
  background: var(--accent-color);
  border-color: var(--primary-color);
}

@media (max-width: 768px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .pricing-card.featured:hover {
    transform: translateY(-8px);
  }
  
  .pricing-title {
    font-size: var(--font-size-3xl);
  }
}

/* Testimonials Section */
.testimonials {
  background: var(--background-secondary);
  position: relative;
  overflow: hidden;
}

.testimonials::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 70%, rgba(255, 36, 66, 0.06), transparent 50%),
              radial-gradient(circle at 70% 30%, rgba(255, 36, 66, 0.06), transparent 50%);
  pointer-events: none;
}

.testimonials-container {
  position: relative;
  z-index: 1;
}

.testimonials-header {
  text-align: center;
  margin-bottom: 4rem;
}

.testimonials-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.testimonials-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.testimonial-card {
  background: var(--background-tertiary);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-size: 3rem;
  color: var(--primary-color);
  opacity: 0.3;
  font-family: serif;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  border-color: var(--border-medium);
}

.testimonial-content {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 1.2rem;
}

.testimonial-info h4 {
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.testimonial-info p {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  margin: 0;
}

@media (max-width: 768px) {
  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .testimonials-title {
    font-size: var(--font-size-3xl);
  }
}

/* Contact Section */
.contact {
  background: var(--background-primary);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 80% 80%, rgba(255, 36, 66, 0.03), transparent 50%);
  pointer-events: none;
}

.contact-container {
  position: relative;
  z-index: 1;
}

.contact-header {
  text-align: center;
  margin-bottom: 4rem;
}

.contact-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--background-secondary);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.contact-item:hover {
  border-color: var(--border-medium);
  transform: translateX(4px);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
}

.contact-details h4 {
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.contact-details p {
  color: var(--text-secondary);
  margin: 0;
}

.contact-form {
  background: var(--background-secondary);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 2.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  background: var(--background-tertiary);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 36, 66, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-button {
  width: 100%;
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: 1rem;
  border-radius: 8px;
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.contact-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255, 36, 66, 0.2);
}

@media (max-width: 768px) {
  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .contact-title {
    font-size: var(--font-size-3xl);
  }
  
  .contact-form {
    padding: 2rem;
  }
}

/* Footer */
.footer {
  background: var(--background-primary);
  border-top: 1px solid var(--border-light);
  padding: 3rem 0 1rem;
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 1rem;
  font-size: var(--font-size-lg);
}

.footer-section p,
.footer-section a {
  color: var(--text-secondary);
  text-decoration: none;
  line-height: 1.6;
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: var(--primary-color);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.footer-social {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: var(--background-secondary);
  border: 1px solid var(--border-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

.footer-social a:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .footer-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-social {
    justify-content: center;
  }
}

/* 滚动进度条 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: var(--gradient-primary);
  z-index: 1000;
  transition: width 0.2s ease-out;
}

/* 返回顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

/* 通知提示 */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 15px 20px;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  z-index: 10000;
  max-width: 300px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.notification-success {
  background: #4CAF50;
  color: white;
}

.notification-error {
  background: #f44336;
  color: white;
}

.notification-content {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: white;
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    padding: 20px 0;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-menu li {
    margin: 15px 0;
  }
  
  .hamburger {
    display: block;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: 36px;
  }
  
  .hero-subtitle {
    font-size: 20px;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 20px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .hero-content h1 {
    font-size: 28px;
  }
  
  .section-header h2 {
    font-size: 28px;
  }
  
  .feature-card,
  .pricing-card {
    padding: 30px 20px;
  }
  
  .contact-form {
    padding: 30px 20px;
  }
}

/* Background Shapes */
.hero-background-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
}

.shape {
  position: absolute;
  border-radius: 30%;
  background: linear-gradient(135deg, rgba(255, 36, 66, 0.1), rgba(255, 107, 122, 0.1));
  filter: blur(15px);
}

.shape-1 {
  width: 220px;
  height: 220px;
  top: 10%;
  left: 5%;
}

.shape-2 {
  width: 150px;
  height: 150px;
  top: 60%;
  left: 20%;
}

.shape-3 {
  width: 100px;
  height: 100px;
  top: 20%;
  right: 15%;
}

.shape-4 {
    width: 250px;
    height: 250px;
    bottom: 5%;
    right: 5%;
}

/* Notification Styles */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  padding: 1rem 1.5rem;
  border-radius: 8px;
  color: white;
  font-weight: 500;
  box-shadow: var(--shadow-heavy);
  max-width: 400px;
}

.notification-success {
  background: linear-gradient(135deg, #10b981, #059669);
}

.notification-error {
  background: linear-gradient(135deg, #ef4444, #dc2626);
}

.notification-content {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.notification-content span:first-child {
  font-size: 1.2rem;
  font-weight: bold;
}

@media (max-width: 768px) {
  .notification {
    top: 10px;
    right: 10px;
    left: 10px;
    max-width: none;
  }
}

/* Detailed Features Section V2 */
.detailed-features {
  background: var(--background-primary);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.detailed-features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 60%;
  background: radial-gradient(ellipse at top, rgba(255, 36, 66, 0.05), transparent 70%);
  pointer-events: none;
}

.detailed-features .features-header {
  text-align: center;
  margin-bottom: 5rem;
}

.detailed-features .features-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.detailed-features .features-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

.features-list-container {
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

.feature-item {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 3rem;
  align-items: center;
  background: var(--background-secondary);
  padding: 3rem;
  border-radius: 24px;
  border: 1px solid var(--border-light);
  transition: all 0.4s ease;
  position: relative;
}

.feature-item:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-heavy);
  border-color: var(--border-medium);
}

.feature-item.reversed {
  grid-template-columns: 1.1fr 1fr;
  direction: rtl;
}

.feature-item.reversed > * {
  direction: ltr;
}

.feature-image {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-medium);
  transform: perspective(1200px) rotateY(-8deg) rotateX(4deg) scale(0.95);
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.feature-item:hover .feature-image {
  transform: perspective(1200px) rotateY(0) rotateX(0) scale(1);
}

.feature-item.reversed .feature-image {
  transform: perspective(1200px) rotateY(8deg) rotateX(4deg) scale(0.95);
}

.feature-item.reversed:hover .feature-image {
  transform: perspective(1200px) rotateY(0) rotateX(0) scale(1);
}

.image-placeholder {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: radial-gradient(ellipse at center, var(--background-tertiary) 0%, transparent 70%),
    linear-gradient(135deg, var(--background-light), var(--background-tertiary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
}

.image-placeholder svg {
  width: 64px;
  height: 64px;
  opacity: 0.8;
  filter: drop-shadow(0 0 15px var(--primary-light));
  transition: all 0.4s ease;
}

.feature-item:hover .image-placeholder svg {
  transform: scale(1.1);
  filter: drop-shadow(0 0 25px var(--primary-color));
}

.feature-content h3 {
  font-size: var(--font-size-3xl);
  margin-bottom: 1.5rem;
  font-weight: 600;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  padding-bottom: 5px;
  display: inline-block;
}

.feature-content p {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.feature-content ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature-content li {
  background: rgba(255, 255, 255, 0.03);
  padding: 1rem 1.5rem;
  border-radius: 8px;
  border-left: 3px solid var(--primary-color);
  transition: all 0.3s ease;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.feature-content li:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateX(5px);
  border-left-color: var(--primary-light);
}

.feature-content li strong {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

@media (max-width: 992px) {
  .feature-item,
  .feature-item.reversed {
    grid-template-columns: 1fr;
    direction: ltr;
    padding: 2rem;
  }

  .feature-image {
    transform: none !important;
  }
}

/* General Section Header */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.section-header p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* How It Works Section */
.how-it-works {
  background: var(--background-primary);
  padding: 100px 0;
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  position: relative;
}

.steps-line {
  position: absolute;
  top: 50px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--border-light), transparent);
  z-index: 0;
}

.step-card {
  background: var(--background-secondary);
  padding: 2.5rem 2rem;
  border-radius: 16px;
  border: 1px solid var(--border-light);
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.step-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-medium);
  border-color: var(--border-medium);
}

.step-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 1.5rem;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 0 25px rgba(255, 36, 66, 0.2);
}

.step-number {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 3rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.05);
}

.step-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.step-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Use Cases Section */
.use-cases {
  background: var(--background-secondary);
  padding: 100px 0;
}

.cases-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.case-card {
  background: var(--bg-color, var(--background-tertiary));
  padding: 2.5rem;
  border-radius: 16px;
  text-align: center;
  border: 1px solid transparent;
  transition: all 0.3s ease;
}

.case-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary-light);
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.case-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 1rem;
  background: white;
  color: var(--primary-color);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.case-description {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

/* FAQ Section */
.faq {
  background: var(--background-primary);
  padding: 100px 0;
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--background-secondary);
  border-radius: 12px;
  border: 1px solid var(--border-light);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 1.5rem;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: var(--font-size-lg);
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}

.faq-answer-container {
  overflow: hidden;
}

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

@media (max-width: 992px) {
  .steps-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .steps-container, .cases-container {
    grid-template-columns: 1fr;
  }
  .steps-line {
    display: none;
  }
}

/* Auth Pages (Login/Register) */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 200px); /* 减去页头页脚大致高度 */
  padding: 4rem 0;
  background: var(--background-primary);
}

.auth-container {
  width: 100%;
  max-width: 450px;
  padding: 3rem;
  background: var(--background-secondary);
  border-radius: 24px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-heavy);
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-header h2 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.auth-header p {
  color: var(--text-secondary);
}

.auth-header p a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.auth-form .form-group {
  position: relative;
  margin-bottom: 1.5rem;
}

.auth-form .form-group svg {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: 15px;
  color: var(--text-muted);
}

.auth-form .form-group input {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  background: var(--background-tertiary);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: all 0.3s ease;
}

.auth-form .form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 36, 66, 0.1);
}

.auth-form .code-group {
  display: flex;
  gap: 1rem;
}

.auth-form .code-group input {
  flex-grow: 1;
}

.auth-form .code-group button {
  padding: 0 1.5rem;
  background: var(--accent-light);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.auth-form .code-group button:hover:not(:disabled) {
  background: var(--background-light);
  border-color: var(--primary-light);
}

.auth-form .code-group button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.auth-form .form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  font-size: var(--font-size-sm);
}

.auth-form .form-options label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.auth-form .form-options a {
  color: var(--text-secondary);
  text-decoration: none;
}
.auth-form .form-options a:hover {
  color: var(--primary-color);
}


.auth-button {
  width: 100%;
  padding: 1rem;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.auth-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255, 36, 66, 0.2);
}

.auth-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.auth-error {
  color: #ff4d6a;
  background: rgba(255, 36, 66, 0.1);
  border: 1px solid rgba(255, 36, 66, 0.2);
  padding: 0.8rem 1rem;
  border-radius: 8px;
  text-align: center;
  margin-bottom: 1.5rem;
}

/* Profile Page */
.profile-page {
  padding: 4rem 0;
  background: var(--background-primary);
}

.profile-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.profile-header {
  text-align: center;
  margin-bottom: 1rem;
}

.profile-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 1rem;
  border: 4px solid var(--border-medium);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
}

.profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-header h2 {
  font-size: var(--font-size-3xl);
  font-weight: 600;
}

.profile-header p {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
}

.profile-page .card {
  background: var(--background-secondary);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 2rem;
}

.profile-page .card h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 1rem;
}

.profile-page .card h3 .icon {
  color: var(--primary-color);
}

.detail-item {
  display: flex;
  justify-content: space-between;
  padding: 1rem 0;
  font-size: var(--font-size-base);
}

.detail-item:not(:last-child) {
  border-bottom: 1px solid var(--border-light);
}

.detail-item span:first-child {
  color: var(--text-secondary);
}

.detail-item .vip-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: linear-gradient(135deg, #ffbf00, #facc15);
  color: #422006;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.pricing-card {
  padding: 1.5rem;
  border: 1px solid var(--border-medium);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.pricing-card.current {
  border-color: var(--primary-color);
  box-shadow: 0 0 15px rgba(255, 36, 66, 0.2);
}

.pricing-card h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  text-align: center;
  margin-bottom: 1rem;
}

.pricing-card .price {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
}

.pricing-card .period {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  font-weight: 400;
}

.pricing-card ul {
  list-style: none;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.pricing-card li {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.pricing-card button {
  width: 100%;
  padding: 0.8rem;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.pricing-card button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255, 36, 66, 0.2);
}

.pricing-card button:disabled {
  background: var(--accent-light);
  cursor: not-allowed;
  color: var(--text-muted);
}

.profile-actions {
  text-align: center;
}

.logout-button {
  background: none;
  border: 1px solid var(--border-medium);
  color: var(--text-secondary);
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
}

.logout-button:hover {
  background: var(--background-secondary);
  color: var(--primary-light);
  border-color: var(--primary-light);
}

/* Profile Icon on Navbar */
.btn-profile {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
  text-decoration: none;
  padding: 0.5rem;
  border-radius: 999px;
  transition: all 0.3s ease;
}

.btn-profile:hover {
  background-color: var(--accent-light);
}

@media (max-width: 768px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}

/* 企业服务样式 */
.enterprise-services {
  padding: var(--section-padding);
  position: relative;
  background: var(--background-primary);
}

.enterprise-services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(255, 36, 66, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(255, 36, 66, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.enterprise-services-header {
  text-align: center;
  margin-bottom: 4rem;
}

.enterprise-services-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.enterprise-services-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.enterprise-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.enterprise-service-card {
  background: var(--background-secondary);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.enterprise-service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.enterprise-service-card:hover::before {
  transform: scaleX(1);
}

.enterprise-service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-heavy);
  border-color: var(--primary-color);
}

.service-icon-wrapper {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
}

.enterprise-service-card:hover .service-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
}

.service-icon {
  color: white;
  width: 28px;
  height: 28px;
}

.service-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.service-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.service-features {
  list-style: none;
  padding: 0;
}

.service-features li {
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
  position: relative;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

.enterprise-cta {
  text-align: center;
  background: var(--background-secondary);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 3rem 2rem;
  margin-top: 2rem;
}

.cta-content h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.cta-content p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: var(--font-size-lg);
}

/* 个人中心企业服务样式 */
.profile-enterprise {
  margin-bottom: 2rem;
}

.enterprise-intro {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: var(--font-size-base);
}

.enterprise-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.enterprise-service-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background: var(--background-tertiary);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.enterprise-service-item:hover {
  background: var(--background-light);
  transform: translateX(4px);
}

.enterprise-service-item .service-icon {
  color: var(--primary-color);
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.enterprise-service-item .service-info h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.enterprise-service-item .service-info p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.4;
}

.enterprise-cta {
  text-align: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .enterprise-services-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .enterprise-service-card {
    padding: 1.5rem;
  }
  
  .enterprise-services-title {
    font-size: var(--font-size-3xl);
  }
  
  .enterprise-services-subtitle {
    font-size: var(--font-size-base);
  }
  
  .profile-enterprise .enterprise-services-grid {
    grid-template-columns: 1fr;
  }
  
  .enterprise-service-item {
    flex-direction: column;
    text-align: center;
  }
  
  .enterprise-service-item .service-icon {
    margin: 0 auto 0.5rem;
  }
}

/* 安装教程页面样式 */
.install-guide-page {
  padding: 120px 0 80px;
  background: var(--background-primary);
  min-height: 100vh;
}

.guide-header {
  text-align: center;
  margin-bottom: 4rem;
}

.guide-header h1 {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.guide-header p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.system-requirements {
  margin-bottom: 4rem;
}

.system-requirements h2 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.system-requirements h2 .icon {
  color: var(--primary-color);
}

.system-requirements ul {
  list-style: none;
  padding: 0;
}

.system-requirements li {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
  position: relative;
}

.system-requirements li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

.install-steps {
  margin-bottom: 4rem;
}

.install-steps h2 {
  text-align: center;
  font-size: var(--font-size-3xl);
  margin-bottom: 3rem;
  color: var(--text-primary);
}

.steps-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.step-card {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  background: var(--background-secondary);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
  border-color: var(--primary-color);
}

.step-number {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: white;
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.step-icon {
  width: 60px;
  height: 60px;
  background: var(--background-tertiary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.step-content p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.step-content ul {
  list-style: none;
  padding: 0;
}

.step-content li {
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
  position: relative;
}

.step-content li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

.download-section {
  text-align: center;
  margin-bottom: 4rem;
}

.download-section h2 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.download-section p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.download-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.download-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  text-align: left;
  max-width: 600px;
  margin: 0 auto;
}

.download-info p {
  margin: 0;
  color: var(--text-secondary);
}

.troubleshooting {
  margin-bottom: 4rem;
}

.troubleshooting h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: var(--text-primary);
}

.troubleshooting-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.troubleshooting-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--background-tertiary);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.troubleshooting-item:hover {
  background: var(--background-light);
  transform: translateX(4px);
}

.troubleshooting-icon {
  color: var(--primary-color);
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.troubleshooting-content h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.troubleshooting-content p {
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

.support-section {
  text-align: center;
}

.support-section h2 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.support-section p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.support-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .install-guide-page {
    padding: 100px 0 60px;
  }
  
  .guide-header h1 {
    font-size: var(--font-size-3xl);
  }
  
  .guide-header p {
    font-size: var(--font-size-base);
  }
  
  .step-card {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }
  
  .step-icon {
    margin: 0 auto;
  }
  
  .download-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .download-info {
    grid-template-columns: 1fr;
  }
  
  .troubleshooting-grid {
    grid-template-columns: 1fr;
  }
  
  .troubleshooting-item {
    flex-direction: column;
    text-align: center;
  }
  
  .troubleshooting-icon {
    margin: 0 auto 0.5rem;
  }
  
  .support-actions {
    flex-direction: column;
    align-items: center;
  }
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.hero-buttons .btn-aurora {
  margin: 0;
}

.hero-buttons .btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  padding: 12px 30px;
  border-radius: 25px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-buttons .btn-secondary:hover {
  background: var(--accent-color);
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-buttons .btn-aurora,
  .hero-buttons .btn-secondary {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
}

/* 导航栏安装教程标签样式 */
.install-guide-link {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-badge {
  position: absolute;
  top: -8px;
  right: -12px;
  background: var(--gradient-primary);
  color: white;
  font-size: 10px;
  font-weight: bold;
  padding: 2px 6px;
  border-radius: 10px;
  line-height: 1;
  min-width: 16px;
  text-align: center;
  box-shadow: 0 2px 4px rgba(255, 36, 66, 0.3);
  animation: badge-pulse 2s infinite;
}

@keyframes badge-pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

@media (max-width: 768px) {
  .nav-badge {
    top: -6px;
    right: -10px;
    font-size: 9px;
    padding: 1px 5px;
  }
}
